Ampulla syringe



May 7, 1935- c. BAUDOUIN -r AL 2,000,434

AMPULLA SYRINGE Filed Sepl.. 14, 1932 I E .Il"IllIlIIIIIIIIIIIIIIIIIIIIIIII Patented May 7, 193s 2,000,434

UNITED STATES PATENT OFFICE AMPULLA SYRINGE charles Baudouin and KarlPietsch, Hersfeld, Germany Application September 14, 1932, Serial No.633,136 In Germany September 17, 1931 5 Claims. (Cl. 12S-220) Ourinvention relates to hypodermic syringes briefly outlined in theappended claims and will and more especially to structural improvementsin be more fully understood by the following specihypodermic syringes ofthe ampulla type, in which cation taken together with the accompanyingvthe medicinal liquor to be injected is permadrawing in which 5 nentlyenclosed and stored'for instantaneous ad- Figs. 1 and 2 are crosssections through a hy- 6 ministration. poderm'ic injecting devicedesigned according to Ampulla-syringes because of being ready for thisinvention and being shown by way of an instantaneous use and because oftaking up relaexample before use and after use, tively little room andbeing of. relatively light Fig. 3 is a fragmentary view of astructurally l Weight are particularly useful in such cases of modifiedhypodermic needle, shown in a larger l0 emergency, where a great numberof patients scale, must be treated simultaneously or in speedy suc-Figs. 4, 5 are fragmentary cross sections made cession as after railroadaccidents, earth quakes, in a larger scale and showing by way of examintimes of war, in remote districts far from ples the attachment of theneedle to the plunger,

l5 hospitals, where epidemic diseases are rapidly Fig. 5a is a front`elevation partly in section, 15 spreading, and in other places, whereordinary taken along line I-I of Fig. 5 and showing the syringes cannotbe timely and properly sterilized inner end of the needle in a largerscale. for want of sterilizing apparatus, sterilizing sub- Anampulla-syringe, structurally improved acstances, trained helpers,accommodation, etc. cording to this invention, consists of a cylindri-However some difficulties and drawbacks cal barrel I0, which is closedat its front end fac- 20 specific of syringes commonly used are alsoining the patient by a wall having afprojecting herent toampulla-syringes of known design, portion Il, and is sealed at its rearend by rewhich are due to the fact, that the plunger of movable sealingmeans, viz a bulb I2 having a the syringe-on injecting the liquid-mustbe hollow neck I3, 0f a plunger 20, slidably fitted forcibly pushedforward by means of a handle in in'said barrel in such position as toenclose a 25 the direction of the needle of the syringe, viz column ofmedicinal liquid in the front end of towards the body of the patient,and that conthe barrel, and 0f a tubular hypodermie needle siderablecare and'skill are required in so manipu- 30, substantially longer thansaid barrel, being lating the syringe and controlling the depth ofsecured to the plunger 20 for actuating the latthe needle where theinjection is to occur, that ter and being slidably fitted in the frontwail of 30 an accidental axial displacement of the needle the barrel.and a complete (double) piercing of the vena The total length of thehypodermic needle 30 into which the medicinal liquor is to be injected,is so chosen as to present to the operator a reare avoided. tainingmember on being pushed into the body The primary object of our inventionis to of the patient, while the barrel, presentingacom- 35 overcome thediiiiculties indicated by providing a plementary counter-handle isrearwardly withstructurally improved ampulla syringe which can drawnrelatively to the plunger from the patient. be safely handled even bypersons who have very The medicinal liqllOr, indicated by dash-lines iSlittle medical training, and in which the risk of enclosed in the spacein front of the plunger wrgngly administering the medicinal liquor byand is free to enter into the hollow needle at 40 completely (doubly)piercing accidentally the its inner end through a hole 3l, 32 shown inFigs. patients vena is greatly reduced. 4, 5, 5a respectively.

The invention further aims at providing an im- The manipulation 0f theampulla Syringe deproved hypodermic ampulla-syringe of relativelyscribed is as follows: The discharge end 33 of simple design which canbe manufactured and the needle acting aS a pli-Inger 10d iS inserted 45supplied in quantities at a comparatively low into the body of thepatient and is held in place price so that it does not matter to throwit away therein by the attendant administering the inafter use, and thatthe total costs involved by jection. the treatment of a great number ofpatients do There upon by pulling beek With the Other not or notappreciably exceed the costs of using hand the barrel l0' viz away fromthe body of 50 liquor containing ampulla and syringes of known thepatient the medicinal liquor is discharged design and of sterilizing thelatter. through the discharge end of the needle at 33.

Other objects of the invention will become in- In order to facilite andrender safer the macidentally apparent hereinafter. nipulation of theinjecting device I prefer to The nature and scope of the invention areprovide the needle 30 with a small handle such 55 as a knob 35 (Figs.l-2) rigidly secured to the front portion of the needle at a suitabledistance from the discharge point of the latter.

For securely protecting the needle Il, while at rest, against infectivecontact and damage the needle should be enclosed in a detachable hoodwhich can be quickly removed. In the embodiment of the invention shownin Figs. 1 and 2 the said hood Il is secured by frictional contact tothe bottom portion il of the barrel.

An important point is the safe attachment of the needle 30, i. e.plunger rod, to the plunger 20. In Figs. 5 and 5a the tubular needle isshown to have been split at its extreme end into a number of tabs 32'from which one is broken off so as to form an intake hole at 3|. y

The remaining tabs 32' are bent around and secured in a preferablydove-tail shaped recess 23 of the plunger by means of a plastic compoundadapted to rigidify.

Various changes and modifications may be made in the structural detailsof hypodermic injecting devices of the improved design described above,without departing from the spirit and the salient ideas of thisinvention.

Fig. 4 shows another convenient way of attaching the tubular needle 30to the plunger 2li viz by forming a resilient loop 36, forcing thelatter into a dove-tail shaped recess of the plunger and ixing ittherein with or without the application of a plastic compound.

Instead of providing a knob 35 as a handle at the needle 30, the lattermay be formed with a loop 36 as shown in an enlarged scale in Fig. 3.

yA convenient method of making barrels for the purpose described of aneasily fusible material, e. g. glass, is indicated in dotted lines inFig. 1, showing the original form of the barrel, before the latter isclosed by fusion under the action of heat.

- It should be noted that injecting devices of the design described canbe conveniently used in empty state, i. e. after the discharge of themedicinal liquor, for withdrawing blood, mucus. pus etc. from the bodyof the patient. In such cases the needle is inserted and held in placeby its handle, whereafter the barrel is pushed .aperture in said needleallowing the said liquor to enter the latter, the said needle beingadapted as to its length to be grasped by the operator and to serve oninjecting the liquid as a gauging and retaining member, while the barrelis rearwardly withdrawn relatively to the plunger and the patient, andretaining means the latter comprising a loop formed in the front sectionof the needle.

2. In an ampulla-syringe, wherein medicinal liquor is permanentlystored, a cylindrical barrel closed at its front end by a wall and atits rear end by removable sealing means a plunger, slidably fitted insaid barrel and enclosing medicinal liquor contained in the front endof.the barrel,

and a tubular hypodermic needle, secured to said plunger for actuatingthe latter and being slidably fitted in the front wall of the barrel, anaperture in said needle allowing the said liquor to enter the latter,the saidneedle being adapted as to its length to be grasped by theoperator and to serve on injecting the liquid as a gauging and retainingmember, while the barrel is rearwardly withdrawn relatively to theplunger and the patient-the inner end of the needle being split intoseveral bent over tabs leaving free an intake hole and being fixed in arecess of the plunger.

3. In an ampulla-syringe, wherein medicinal liquor is permanentlystored, a cylindrical barrel closed at its front end by a wall and atits rear end by removable sealing means a plunger, slidably fitted insaid barrel and enclosing medicinal liquor contained in the front end ofthe barrel, and a tubular hypodermic needle. secured to said plunger foractuating the latter and being slidably fitted in the front wall of thebarrel, an aperture in said needle allowing the said liquor to enter thelatter. the said needle being adapted as to its length to be grasped bythe operator and to' serve on injecting the liquid as a gauging andretaining member, while the barrel is rearwardly withdrawn relatively tothe plunger and the patient,the inner end of the needle being formedwith a loop, which is fixed in a recess of the plunger.

4. In an ampulla-syringe, wherein medicinal liquor is permanentlystored, a cylindrical barrel closed at its front end by a wall memberand its rear end by a frangible tip portion adapted to be' broken beforeuse, a plunger, slidably fitted in said barrel and adapted to enclosemedicinal liquor between the front end of the barrel and the front endof the plunger, a tubular hypodermic needle substantially longer thansaid barrel, secured to said plunger and forming an operating meanstherefor, said needle being slidably i'ittedinanopeninginthefrontwallofthebarrel, and an aperture in said needlecommunicating with the space in the front end of the barrel and allowingsaid liquor to enter the needle, the saidneedle being adapted as to itslength to be grasped by the operator and to serve'on injectlng theliquid as a retaining member, said barrel being adapted to be rearwardlywithdrawn relativelyto the plunger and the patient.

5. In an ampulla-syringe, wherein medicinal liquor is permanentlystored, a cylindrical barrel closed at its front end by a walll and atits rear end by removable sealing means, a plunger slidably iltted insaid barrel and enclosing medicinal liquor contained in the front end ofthe barrel, a tubular hypodermic needle secured to said plunger foractuating the latter and being slidably fitted in the front wall of thebarrel, an aperture in said needle allowing the said liquor to enter thelatter, the said needle being adapted as to its length to be grasped bythe operator and to serve on injecting the liquid as a retaining member,while the barrel is rearwardly withdrawn relatively to the plunger andthe patient, and holding means mounted on said needle exteriorly of saidbarrel, adapted to be grasped by the operapatients body during use.

man Prs'rscn.

